After starting the game, go into the option menus and switch the 'Control Set-up' to Joystick mode


Than enter the key configuration sub menu and apply the following buttons shown in this screenshot.


Apply the following:
Run - 'Shift' key
Change Aim - 'A' key
Aim - 'D' key
Body Part Aim - 'S' key

There are still some other keys you can set but I will leave those out as each players might have different ways to place them to their likings.

Now, after setting up the above buttons, your can now enjoy abit better in this game.

Place your Right Hand on your keyboard Numpad Arrows Key instead of the normal set of Arrow Keys.

Place your Left Hand with your Thumb on the Spacebar and your other fingers on the rest of the keys the we binded above.

That it's, this setup allow you to place both hand on the keyboard fully in reach of the F1 to F4 Keys and playing the game without using your mouse. How this helps better anyone gameplay of this game.

Cheer!~